Commit 6c7ef543 authored Aug 10, 2021 by Jens Axboe

fs: add kiocb alloc cache flag



If this kiocb can safely use the polled bio allocation cache, then this
flag must be set. Generally this can be set for polled IO, where we will
not see IRQ completions of the request.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent da521626

include/linux/fs.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -319,6 +319,8 @@ enum rw_hint {
		/* iocb->ki_waitq is valid */
		#define IOCB_WAITQ (1 << 19)
		#define IOCB_NOIO (1 << 20)
		/* can use bio alloc cache */
		#define IOCB_ALLOC_CACHE (1 << 21)

		struct kiocb {
		struct file *ki_filp;